/* Qilin - a Java Pointer Analysis Framework
 * Copyright (C) 2021-2030 Qilin developers
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3.0 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 *
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <https://www.gnu.org/licenses/lgpl-3.0.en.html>.
 */

package qilin.parm.select;

import java.util.Set;
import qilin.core.context.Context;
import qilin.core.pag.AllocNode;
import qilin.core.pag.FieldValNode;
import qilin.core.pag.LocalVarNode;
import qilin.parm.ctxcons.CtxConstructor;
import sootup.core.model.SootMethod;

public class PartialMethodLvSelector extends CtxSelector {
  private final int k;
  private final int hk;
  // precision-critical methods selected by the method-level approaches, e.g., Zipper.
  private final Set<SootMethod> pcm;

  public PartialMethodLvSelector(int k, int hk, Set<SootMethod> pcm) {
    this.k = k;
    this.hk = hk;
    this.pcm = pcm;
  }

  @Override
  public Context select(SootMethod m, Context context) {
    if (pcm.contains(m)) {
      return contextTailor(context, k);
    } else {
      return CtxConstructor.emptyContext;
    }
  }

  @Override
  public Context select(LocalVarNode lvn, Context context) {
    SootMethod sm = lvn.getMethod();
    if (pcm.contains(sm)) {
      return contextTailor(context, k);
    } else {
      return CtxConstructor.emptyContext;
    }
  }

  @Override
  public Context select(FieldValNode fvn, Context context) {
    return contextTailor(context, k);
  }

  @Override
  public Context select(AllocNode heap, Context context) {
    SootMethod sm = heap.getMethod();
    if (pcm.contains(sm)) {
      return contextTailor(context, hk);
    } else {
      return context;
    }
  }
}
